How deep is Quaddick Reservoir, Middle?

Quaddick Reservoir, Middle reaches a maximum depth of 18 feet in the CT DEEP Lake Bathymetry survey. Most of it is far shallower: the survey charts 7 closed depth contours over about 203 acres, and half of that water sits inside the 9 ft line.

Where is the deepest part of Quaddick Reservoir, Middle?

The deepest charted water on Quaddick Reservoir, Middle lies inside the 18 ft contour, toward the southeastern corner of the lake. That contour encloses under an acre, under 1% of the mapped water, so it is a small target on a small water, the depth chart above gives the contour to line up on.

How much of Quaddick Reservoir, Middle is shallower than 9 feet?

About half. The 9 ft contour encloses 37 acres of the roughly 203 acres inside the outer 0 ft line, so the other half of the water is shallower than 9 feet. The sharpest drop is between 6 and 9 feet, where the mapped water sheds 100 acres.

How accurate is this Quaddick Reservoir, Middle depth map?

The contours come from the CT DEEP Lake Bathymetry survey, retrieved August 2026 and last rebuilt on August 19, 2026. Depths change over time with water levels and sediment, so treat this map as a planning guide for fishing, and never use it for navigation. Acreages are computed from the published contour geometry, not from a separate area survey, so read them as close approximations.

Connecticut lake depth maps

Quaddick Reservoir, Middle depth map

Quaddick Reservoir, Middle in Thompson, Connecticut reaches a depth of 18 feet. Quaddick Reservoir, Middle is charted here across 7 closed depth contours, from the 0 ft line down to 18 ft, enclosing about 203 acres of water. Half of that water lies inside the 9 ft line, and only under an acre lie inside the deepest one. Every contour is on the interactive map below, free and without an account.

Data: CT DEEP Lake Bathymetry (CC0). Contours closed, checked and area-computed by Jordan Carter, founder of GilledIt · page updated August 19, 2026

Quaddick Reservoir, Middle depth chart: 7 depth contours from 0 to 18 ft

Data: CT DEEP Lake Bathymetry (CC0), retrieved August 2026 · depths change over time · not for navigation

Quaddick Reservoir, Middle depth chart data: water enclosed by each contour
Depth contour	Water inside it	Share of mapped water
0 ft	203 acres	100%
3 ft	174 acres	86%
6 ft	137 acres	68%
9 ft	37 acres	18%
12 ft	14 acres	7.1%
15 ft	6.9 acres	3.4%
18 ft	under 1 acre	under 1%

Acreages are computed from the closed CT DEEP Lake Bathymetry contour rings, with islands subtracted. Shares are of the 203 acres inside the outermost charted contour (the 0 ft line), which is the outer edge of the mapped water, several state files carry no 0 ft shoreline line, so this is not the same as a share of the lake's published surface area.

Fishing Quaddick Reservoir, Middle: an evenly graded bottom

About 203 acres of Quaddick Reservoir, Middle sit inside the survey's 0 ft contour, and half of that water is already gone by the 9 ft line: the bottom loses depth gradually and evenly, with no broad shelf and no single abrupt drop. The steepest break on the chart runs from 6 down to 9 ft: 100 acres of bottom fall away across 3 ft there, which makes that band the first contour to work. Inside the 18 ft contour there is under an acre of water, toward the southeastern corner of the lake: a single pocket rather than a basin, and worth a drift over in high summer. At 18 ft top to bottom, weed growth shapes this water more than depth does, but the 0.1-acre deep spot still concentrates fish in the heat of summer, and the one-contour depressions on the chart are the ones most anglers row straight over.

Ice fishing on Quaddick Reservoir, Middle

Shallow water like Quaddick Reservoir, Middle is usually among the first to make safe ice, and with only 0.1 acres inside the 18 ft contour the fish have very little deep water to spread into once the weed beds die back. That hole, and the subtle single-contour depressions across the 203-acre basin, are where to start. Check ice thickness locally before you walk out.

Quaddick Reservoir, Middle depth map FAQs

How deep is Quaddick Reservoir, Middle?: Quaddick Reservoir, Middle reaches a maximum depth of 18 feet in the CT DEEP Lake Bathymetry survey. Most of it is far shallower: the survey charts 7 closed depth contours over about 203 acres, and half of that water sits inside the 9 ft line.
Where is the deepest part of Quaddick Reservoir, Middle?: The deepest charted water on Quaddick Reservoir, Middle lies inside the 18 ft contour, toward the southeastern corner of the lake. That contour encloses under an acre, under 1% of the mapped water, so it is a small target on a small water, the depth chart above gives the contour to line up on.
How much of Quaddick Reservoir, Middle is shallower than 9 feet?: About half. The 9 ft contour encloses 37 acres of the roughly 203 acres inside the outer 0 ft line, so the other half of the water is shallower than 9 feet. The sharpest drop is between 6 and 9 feet, where the mapped water sheds 100 acres.
How accurate is this Quaddick Reservoir, Middle depth map?: The contours come from the CT DEEP Lake Bathymetry survey, retrieved August 2026 and last rebuilt on August 19, 2026. Depths change over time with water levels and sediment, so treat this map as a planning guide for fishing, and never use it for navigation. Acreages are computed from the published contour geometry, not from a separate area survey, so read them as close approximations.

Depth maps for lakes near Quaddick Reservoir, Middle

Quaddick Reservoir, Lower depth map · 15 ft max · 1 mi away
West Thompson Reservoir depth map · 30 ft max · 5 mi away
Killingly Pond depth map · 21 ft max · 7 mi away
Roseland Lake depth map · 18 ft max · 7 mi away
Alexander Lake depth map · 48 ft max · 8 mi away

Mapped fishing venues near Quaddick Reservoir, Middle

Quaddick Reservoir, Middle in the venue directory covers access and fishing details for this water.

Fishing in Connecticut needs a state license: Connecticut fishing license guide · all Connecticut venues